They could indeed be spider bites, although there are lots of other biting insects and arachnids that could have caused them. As you'd imagine, insect bites are amazingly frequent all over the world. Most go unnoticed, and the vast majority don't cause any serious complications. Watch the bites you have. They should start to disappear over the next day or so. If they get a lot worse, call for help. There are some wonderful Poison Control sites (especially the one in California at UC Davis!) that can tell you all you need to know -- and more -- about bites.
anything could if you had an allergic reaction to it
Trying to start an exercise habit for life; but you could also work on your triceps, forearm, and shoulder muscles
they could possibly be two spider bites! they can be painful and they are spots , there is a possibility they could just be a skin reaction to your sheets or a rash!
Pain in the right forearm, elbow, shoulder, and a stiff neck could be due to a pinched nerve or pulled muscle. This type of pain can come from sleeping in a strange position or even from a fall.
I have looked around to see what I could find on what you describe and have landed a site that may be of interest to this particular problem as well a guidance to related sites. Go to (Lumps under the skin fibromyalgia) in the related links below for more information on this subject.
Arthritis may be to blame, however, any time you have pain from your shoulder or chest area going down your arm, it is advisable to visit you doctor immediately, so as to rule out any cardiac involvement.
Two bones in the forearm are not necessary. However, to function normally, both the ulna and radius bones are required. Without the radius bone, the forearm could not be rotated, and without the ulna, the forearm would have little strength.
it could cause it to be very painful to even move and could cause you to damage the ligaments around your shoulder meaning when you have it put back into place it would have a long recovery time because the ligaments have to pull themselves back I only know this because I dislocated my shoulder from my collar bone about two weeks ago and I have a recovery time of two months
I don't think it could be from a spider bite. I think maybe you are allergic to something. You should think about what kind of products might make your skin have an allergic reaction to it. It could be you used a towel that had a substance on it, like those laundry fresh sheets that you use when you put the towels in the dryer. You have to always take into consideration how sensitive skin is
It could be a wolf spider which has bites are are painful but not poisonous. There are many common house spiders that have these markings.
They say that the whole population of the world could fit onto the Isle of Wight standing shoulder to shoulder.
nonething